Type-writer line-spacing mechanism.



J. RABER.- TYPE WRITER LINE SPAGING MECHANISM. XPPLIOATION FILED NOV. 2, 1900.

1,056,213. Patented Mar. 18, 1913.

ED STATES PATENT OFFICE- Josnrnnannn; or POP-LAB BLUFF, MIssoURL'AssisNon To mmaiwmmqnm COMPANY, or ST. LOUIS, MISSOURI, A CORPORATION or MISSOURI.

I Specification ofietters Patent.

TYPE-WRITER LINE- SPACITVG MECHANISM.

Patented uar. 13,1913.

Application filed November 2, 1908. Serial No. 460,619.

To all whom it may concern.

Be it known that I, JOSEPH RABER, a citi-' zen of the United States, residing at Poplar Bluff, Missouri, have invented a new and useful Type-Vriter Line-Spacing Mechanism, of which the following is a specification.

This invention relates to typewriting machines, and more particularly to platen feed or line spacing mechanism of typewriting machines, and has for its object to provide anefiicient mechanism to rotate the platen tofeed the paper in its line spacing movements, and having means which may be adjusted so that the platen will be operated to move the paper one, or more, spaces, as

. desired.

,lYith this object in view I have illustrated oneembodiment of the mechanism for feeding the paper,Figure 1 being an end view of a platen carriage having the line spacing mechanism mounted thereon. Fig. 2 is a front viewof that portion of the platen carriage in which the line spacing devices are mounted. Fig. 3 a sectional .view approximately on the line 3-3 of Fig. 2. Fig. & is a plan view of the line spacing mechanism and that part of the platen carriage which supports it. Fig. 5 is a sectional view of the platen shaft and pawl support on the line of Fig. 2. Fig. 6 is a detail View of the device whereby the engaging pawl is adjusted to regulate rotationof the.platen. Fig. 7 is a sectional view of the pawl-support and adjusting device.

Sis a perspective view of the pawl-support and the adjusting device.

The platen l is of the usual construction being rigid on a shaft 2 which is revolubly jcurnaled in hearings in the end plates 3 of the platen frame. The said plates 3 are pivoted at to the platen carriage 5. These parts may be of any preferred arrangement, construction and operation, and the present inventionis combinable with any of the various types.

A shaft 6 is journaled in a horizontal bearing 7 on theplate 3 at the left side of the machineunderneath the platen shaft and at right angles thereto. On the front end of the shaft 6 a lever 8 is attached, and on the rear end isan arm 9 extending toward the end of the platen. A spring 10 has one end attached to the plate 3 and the other' are retained on the extension by a nut 14 4 which constitutes an abutment for the outer end of the spring. The inner end of the spring has for an abutment an offset or shoulder in the sleeve, so that the sleeve is yieldingly held in its lower position on the arm 9 which carries it. At the lower end or base of the sleeve is a flange 15 provided on its outer edge with a number of notches or ofi'sets-three in the present instancedesignated by a, b and a, respectively. These ofisets are at different distances from the axis of the sleeve, the one designated by a being the farthest, the one designated by 6 being next, and-the one designated by c the next. Corresponding to these ofi'sets a .number of holes 16 are. formed in the lower end of the sleeve, said holes being intended to receive a pin or projection 17 on the arm 9 and thereby securely hold the sleeve and flange in any of their adjustments. The surface of the sleeve is knurled or spotted whereby it may be firmly engaged manually,

to be drawn upwardly 1n opposition to the spring therein and turned to its difierent adjustments as required to engage .the pin 17 in one of the holes 16. A pawl 18 is pivoted on the arm 9 and is actuated toward the ratchet wheel 19 which is rigid on the platen shaft by a spring 20. The spring 20 is seated in a hole in the arm 9 having said arm for an abutment, with its outerend bearing against the pawl 18, i being sustained and prevented from being displaced by a pin 21 on the pawl projecting into the spring. A sliding pin 22 extends obliquely downward and inward through a hole in the arm 9, having its lower end restingagainst an extension of the pawl 18 below the pivot of the pawl, and its upper end the sleeve 13, whereby the operator may readily discern, 111 advance, to what extent the paper will be led when the line spacing mechanism is operated.

To rotate the platen as required to feed the paper the lever S is oscillated in the direction indicated by the arrow in Fig. 2 until and after engagement of the pawl 18 with the ratchet wheel '19. As the pawl recedes from the plate 3 the sliding pin 22 allows the spring 20 to actuate the pawl into engagementwith the ratchet wheel and continued movement thereof rotates the platen. Rotation of the platen may continue until the flange 15 abuts against the pawl after which. obviously, the lever and pawl are locked against further movement. The arrangement is such that the platen may be rotated in this way either one, two or three spaces, the distance of rotation being dependent on the adjustment of the flange 15. That is, if the flange be adjusted so that the offset a .will engage against the pawl the platen will be rotated, and the paper fed, one line space; theoffset Z) permits, movement of two line spaces; and theoti'set 0 allows the platen to rotate as required to feed the pt. per three line spaces. Obviously, by following this principle ot'regulating operation of the pawl and lever the platen may be rotated to feed the paper any distance required in commercial usage. Knobs 24: are on the platen shaft whereby the platen may be manually rotated in the usual way.

It will be observed that there may be variations in the construction and arrangement of the parts comprising this invention without in the least departing from the spirit and scope of the invention. I do not restrict myself to identical features or an rangement, but

What I claim and desire to secure by Letters Patent is:

1. The combination with a platen, and a ratchet wheel, of a pivotally'supported arm,

a spring actuating said arm in one direction, a pawl carried by said arm, a sliding pin disconnected from said spring effective to hold said pawl out of contact with said ratchet wheel when in idle position. means for causing said pawl to engage with said ratchet wheel and rotate the platen, and means whereby the pawl and platen will be stopped when the platen has rotated the desired number of line spaces, substantiall; specified.

2. A revoluble platen, and a ratchet wheel in rigid connection with said platen, in combination with a pawl, a rochable support for said pawl, a spring actuating said pawl toward the ratchet wheel, a sliding pin mounted separately from said spring and effective to hold said pawl out of engagement with the ratchet wheel, manually operable means for rocking said support and causing said pawl to rotate the platen, and means carried. by said rockab'le support; for StOPPlDQ, the platen at one or more spaces of movement, as desired, substantially as specified.

The combination with a platen, and a ratchet wheel, of a pivotally-mounted arm, a sprin sustaining one end of said arm, a

pawl pivoted to said arm, a sliding pin supported by said arm and holding said pawl out of engagement with the ratchet wheel,

means for causing said pawl to engage with the ratchetwheel and thereby rotate the platen, and a. movable gage device carried by said arm whereby the pawl and ratchet wheel are locked together and prevented from moving beyond a predetermined distance. substantially as specified.

l. The combination with a revoluble platen, and a ratchet wheel, of a pivoted arm, a pawl pivoted to said arm, a sliding pin carried by said arm and holding said pawl away from said ratchet wheel, means for causing said pawl to engage with said ratchet wheel and rotate the platen, a gage device carried by said arm whereby said pawl will be prevented from moving past a predetermined point, and a series of stops on said gage device whereby said pawl may be stopped in one of several positions, substantially as specified.

5. The combination with a platen, of a pawl, a spring and sliding pin se arate from said spring cooperating elfectively to hold said pawl in idle posit-ion out of engagement with said platen, means for causing said pawl to rotate the platen, and locking means whereby rotation of the platen may be stopped after turning a predetermined distance, substantially as specified.

(3. The combination with a platen, and a ratchet wheel, of a shaft journaled below the platen shaft, an arm connected to said shaft, a pawlpivoted to said arm, a gage to abut against said pawl, a spring and sliding pin cooperating efi ectiv ely to hold said pawl away from the ratchet wheel, and means for moving said pawl into engagement with the ratchet wheel. substantially as specified.

7. The combination with a platen, and a: ratchet wheel, of a pivotally-mounted arm, a spring actuating said arm in one direction, a pawl pivoted to said arm. a pin carried by said. arm, means for 'ausing said pin to hold said pawl out of engagement with said ratchet wheel, a spring carried by said arm and actuating said pawl into engagement with said ratchet wheel when said pin is released, and a locking device to prevent excess movementof said pawl, substantially as specified.

The combination with a platen, and a ratchet wheel, of an arm, a spring actuating said arm in one direct-ion, a pawl pivoted to saidarm', a spring seated in said arm and actuatlng said pawl-toward said ratchet wheel, means for holding said spring in proper pos tion against. said pawl, a sliding abutment pin carried by said arm for said pawl, and

, -means for operating said arm effectively to engage said pawl with said ratchet wheel, substantially as specified.

9. The combination with a platen shaft, a platen onsaid shaft, and a ratchet. wheel supported by said shaft, of a shaft below the platen shaft, an arm on said last-named shaft, a pawl pivoted to'said arm, a spring seated in said arm and actuating said pawl toward said ratchet wheel, a sliding pin in said arm constituting an abutment for said pawl, a handle whereby said pawl may be engaged with said ratchetwheel, and an adjustable-stop device carried by said arm and being efiective to limitmovement of said pawl when said handle is operated, substantially as specified. 1

10. The combination with a platen, and a toothed wheel, of a movable support, a pawl carried by said support, an adjustable abutsaid supportfor engaging an extension on said pawl, a spring cooperating with said element effectively to hold said pawl in idle position out. of engagement with said wheel. means for causing said pawl to move said movable element and to rotate said plat-en, and means whereby rotation of the platen may be stopped after turning a predetermined distance. substantially as-specified.

" 121 Thecombinaticn with a platen, and a toothed wheel. of a movable support, a pawl carried by said support. a movable element and a spring coiiperating to hold said pawl out of engagement with said wheel. means for moving said support eii'ectivelv to move said pawl toward said wheel, means carried by said support for causing said pawlto move said -ijnovable elementa'nd also to move said pawl toward said wheel faster than the movement of said support whenjs aid support is moved as aforesaic l, substantially as specified '13. The combination with a platen and a ratchet wheel connected with said platen, of a pivoted support, a pawl pivoted on said support, a spring, a movable element carried by said pivoted support separate from and controlled by said spring effectively to hold sa d pawl in idle position; out oftengagement. with said wheel,means for moving said move ,5 able element to permit said, pawl vtofoperate faster than said supportand means for cans: ingsaid pawl to engagesaidl wheel androtate said platen, substantially as specified. 1 f; 14. The combination with -a,platen anda toothed wheel rigid with saidplaten, (of a,, shaft, a support on said shaft, a pawl pivoted on said support, a movableelementcan ried by said support, a, spring controlling said support and movable-element effectively to hold said pawl out oftengagementavith j said wheel, actuating meanswhere by said '80 movable element will begtmoved whensaid sppport is moved, andfla lever operabletoQ. I cause said" pawl to engage with said wheel. 5 and rotate said specified. 1 15. The combination with'aplatemand-a toothed wheel rigid with said-platen, .ofi-a support, a pawl carried by saidsuppo gt, a

spring,'a separate movable elemenficarried,1,

by said support and controlled by ,sat Q spring effectively to hold said pawlontpf engagement with said wheel, a lever operable to rock said support to engage said pawl with said wheel and rotate said means for causing said pawl, tomove said movable element, an adjustable stop. carried by said support-and being effective to,limit movement of said pawl when said lever -ism, operated, a latch for holding saidstopin different adjustments and: aspring actuating said stop to engage,said'latch, substantial as specified. v; 16. The combination with aaplatemshaft,

a platen on said shaft, and-1a toothed rigid with said platen. of ,a shaft supported, at right angles to said platen shaft;a,sup-,,. port attached to said second-named shaft at one side.of said platen shaftaa handle at-=, t-ached to said second-named shaftattlie op posite side of said platen; shaft, a pawl-car ried by said support and arranged to en-gage with said wheel when-said handle isoper ated. an element effective: to move said urw toward said wheel faster than t-hemoveinen; of said support, and an adjustable:stop;care ried by and moving with: saidsupportto limit movement of saidpawl,substantially. as specified. l7. l bs-combination:.witli,,a pl'aten,an(l. toothed wvheel"rigid?with saidapl-aten; 1 rockablej support,a 'p.awlj ;p'i;vote,l on said sup port: an extension nvs'aid. :pawl, alsp tending to move said-pawl;toward wheel. a sliding pin carried by saidroe l support and" arrangedwto ehgage with salt, extension on said pawl to hold said pawl normally out of engagement with said wheel, a spring effective to actuate said support and said pawl away from said wheel and to cause said movable element normally to engage 130 platen, substantially ,,a s-. i,

I I i i a I and causing said movable element to hold said pawl out of engagement with said wheel, an adjustable stop carried by said support with which said pawl engages in idle position and utter said wheel and platen have been rotated the required distance, and

means for holding said stop in different adjustments, substantially as specified.

19 The combination with a platen, and a toothed wheel rigid with said platen, of a rockable support, a pawl carried by said support. a spring actuating said pawl toward said wheel, a movable element carried by said support, a spring foixcausing said movable element to hold said pawl out of engagement with said wheel, means for moving said support to engage said pawl with said wheel, an adjustable stop carried by said lockable support and being effective to limit movement of said pawha latch device on said support to hold said stop in any of its adjustments, a sleeve on said stop and a spring incased within said sleeve for holding said step in engagement with said latch device, substantially as specified.

20. The combination with a platen, of a support, a pawl carried by said support, means for holding said pawl out of engagement with said wheel, means for moving said support to engage said pawl with said wheel. an extension on said support, a sleeve encircling said extension, a series of stops for said pawl on said sleeve, a latch pin engaging with said sleeve to hold any desired stop in position to be engaged by said pawl, and a spring inc-ased by said sleeve and holding said sleeve in engagement with said latch pin, substantially as specified.

2 The combination with a platen, and a ratchet wheel rigid with saidplaten, of a plate in which said platen j'ournaled, bearings carried b v said plate. a shaft mounted in said bearings. a pawl support attached to said shaft. a pawl pivoted on said support, a sliding pin carried by said supper-hand arranged to engage an extension on said pawl. a spring actuating said support to c: use said pin to engage said plate and said extension on said pawl, ahd a lever for rocking said shaft in opposition to said spring to engage said pawl with said wheel, substantially as specified.

22. The combination with a platen, and a ratchet wheel. rigid with said platen, of a plate in which said platen is journaled, bearings carried by said plate, a shaft mounted in said bearings, a pawl support attached to said shaft, a pawl pivoted on said support, a sliding pin carried by said support, a spring actuating said support and causing said sliding pinv to engage said plate and an extension on said pawl, a lever for engaging said pawl with saidi'atchet wheel. a spring for actuating said pawl toward said ratchet wheel when said lever is operated, and a stop device limiting movement of said pawl, substantially as specified.

23. The cmnbination with a platen, and a ratchet wheel rigid with said platen, of a plate in which said platen is journalcd, bearings carried by said plate, a shaft journaled in said bearings. a pawl support attached to said shaft, a pawl pivoted on said support, a sliding pin carried by said pawl support, a spring causing said pin to engage .with said plate and with said pawl, a lever for moving said pawl into engagement with said ratchet wheel, a spring actuating said pawl toward said ratchet wheel, and an adjustable stop device carried by an danoving with said pawl support for limiting movement of said pawl, substantially as specified.

24. The combination with a platen, and a ratchet wheel rigid with said platen, of a plate in which said platen is journaled, bearings carried by said plate,,a shaft journaled in said bearings. a pawl support attached to said shaft, a pawlpivoted on said support, a sliding pin carried by said support, a spring between said pawl and said support for actuating said pawl toward said ratchet wheel, a stronger spring causing said sliding pinto engage with said pawl andhold said pawl out of engagement with said ratchet. wheel, a lever for engaging said pawl with said ratchet wheel, a stop device carried by and moving with said pawl support, and a latch device for holding said stop device in ditlerent adjustments, substantially as specified.

In testimonv whereof, I hereunto atlix my signature to this specification this 18th day of Sept, 1908, in the presence of two witnesscs.

JOSEPH R-ABER. 1,. a]

W itncsses RUDOLPH J. HOELLER, JOHN E. W. Gnnvn. 

